fl.cxx

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	w->handle(FL_MOVE);
      }
    } else {
      Fl::belowmouse(0);
    }
  }
}

#ifndef WIN32
Fl_Widget *fl_selection_requestor; // from Fl_cutpaste.C
#endif

// This function is called by ~Fl_Widget() and by Fl_Widget::deactivate
// and by Fl_Widget::hide().  It indicates that the widget does not want
// to receive any more events, and also removes all global variables that
// point at the widget.
// I changed this from the 1.0.1 behavior, the older version could send
// FL_LEAVE or FL_UNFOCUS events to the widget.  This appears to not be
// desirable behavior and caused flwm to crash.

void fl_throw_focus(Fl_Widget *o) {
  if (o->contains(Fl::pushed())) Fl::pushed_ = 0;
  if (o->contains(Fl::selection_owner())) Fl::selection_owner_ = 0;
#ifndef WIN32
  if (o->contains(fl_selection_requestor)) fl_selection_requestor = 0;
#endif
  if (o->contains(Fl::belowmouse())) Fl::belowmouse_ = 0;
  if (o->contains(Fl::focus())) Fl::focus_ = 0;
  if (o == fl_xfocus) fl_xfocus = 0;
  if (o == fl_xmousewin) fl_xmousewin = 0;
  fl_fix_focus();
}

////////////////////////////////////////////////////////////////

// Call to->handle but first replace the mouse x/y with the correct
// values to account for nested X windows. 'window' is the outermost

#if 0
static int send(int event, Fl_Widget* to, Fl_Window* window) {
  
  // Microwindows Hack

  int ret = to->handle(event);

  return ret;
}

#else

// window the event was posted to by X:
static int send(int event, Fl_Widget* to, Fl_Window* window) {

  int dx = window->x();
  int dy = window->y();
  
  for (const Fl_Widget* w = to; w; w = w->parent())
    if (w->type()>=FL_WINDOW) {
      dx -= w->x(); dy -= w->y();
    }

  int save_x = Fl::e_x; Fl::e_x += dx;
  int save_y = Fl::e_y; Fl::e_y += dy;

  int ret = to->handle(event);
  Fl::e_y = save_y;
  Fl::e_x = save_x;

  return ret;
}
#endif

int Fl::handle(int event, Fl_Window* window)
{
  Fl_Widget* w = window;

  switch (event) {

  case FL_CLOSE:
    if (grab() || modal() && window != modal()) return 0;
    w->do_callback();
    return 1;

  case FL_SHOW:
    ((Fl_Widget*)w)->show();
    return 1;

  case FL_HIDE:
    ((Fl_Widget*)w)->hide();
    return 1;

  case FL_PUSH:
    if (grab()) w = grab();
    else if (modal() && w != modal()) return 0;
    pushed_ = w;

    if (send(event, w, window)) return 1;
    // raise windows that are clicked on:
    window->show();
    return 1;

  case FL_MOVE:
  case FL_DRAG:
    fl_xmousewin = window; // this should already be set, but just in case.
    if (pushed()) {
      w = pushed();
      event = FL_DRAG;
    } else if (modal() && w != modal()) {
      w = 0;
    }
    if (grab()) w = grab();
    break;

  case FL_RELEASE: {
    if (pushed()) {
      w = pushed();
      pushed_ = 0; // must be zero before callback is done!
    }
    if (grab()) w = grab();
    int r = send(event, w, window);
    fl_fix_focus();
    return r;}

  case FL_UNFOCUS:
    window = 0;
  case FL_FOCUS:
    fl_xfocus = window;
    e_keysym = 0; // make sure it is not confused with navigation key
    fl_fix_focus();
    return 1;

  case FL_KEYBOARD:
    fl_xfocus = window; // this should already be set, but just in case.

    // Try it as keystroke, sending it to focus and all parents:
    for (w = grab() ? grab() : focus(); w; w = w->parent())
      if (send(FL_KEYBOARD, w, window)) return 1;

    // recursive call to try shortcut:
    if (handle(FL_SHORTCUT, window)) return 1;

    // and then try a shortcut with the case of the text swapped, by
    // changing the text and falling through to FL_SHORTCUT case:
    if (!isalpha(event_text()[0])) return 0;
    *(char*)(event_text()) ^= ('A'^'a');
    event = FL_SHORTCUT;

  case FL_SHORTCUT:

    if (grab()) {w = grab(); break;} // send it to grab window

    // Try it as shortcut, sending to mouse widget and all parents:
    w = belowmouse(); if (!w) {w = modal(); if (!w) w = window;}
    for (; w; w = w->parent()) if (send(FL_SHORTCUT, w, window)) return 1;

    // try using add_handle() functions:
    if (send_handlers(FL_SHORTCUT)) return 1;

    // make Escape key close windows:
    if (event_key()==FL_Escape) {
      w = modal(); if (!w) w = window;
      w->do_callback();
      return 1;
    }

    return 0;

  case FL_ENTER:
    fl_xmousewin = window;
    fl_fix_focus();
    return 1;

  case FL_LEAVE:
    if (window == fl_xmousewin) {fl_xmousewin = 0; fl_fix_focus();}
    return 1;

  default:
    break;
  }
  if (w && send(event, w, window)) return 1;
  return send_handlers(event);
}

////////////////////////////////////////////////////////////////
// hide() destroys the X window, it does not do unmap!

void Fl_Window::hide() {
  
  clear_visible();
  if (!shown()) return;

  // remove from the list of windows:
  Fl_X* x = i;
  Fl_X** pp = &Fl_X::first;
  for (; *pp != x; pp = &(*pp)->next) if (!*pp) return;
  *pp = x->next;
  i = 0;

  // recursively remove any subwindows:
  for (Fl_X *w = Fl_X::first; w;) {
    Fl_Window* W = w->w;
    if (W->window() == this) {
      W->hide();
      W->set_visible();
      w = Fl_X::first;
    } else w = w->next;
  }

  if (this == Fl::modal_) { // we are closing the modal window, find next one:
    Fl_Window* w;
    for (w = Fl::first_window(); w; w = Fl::next_window(w))
      if (w->modal()) break;
    Fl::modal_ = w;
  }

  // Make sure no events are sent to this window:
  fl_throw_focus(this);
  handle(FL_HIDE);

#ifdef WIN32
  if (x->private_dc) ReleaseDC(x->xid,x->private_dc);
  if (x->xid == fl_window) fl_GetDC(0); // releases dc belonging to window
#else
#ifdef NANO_X
  if (x->region) GrDestroyRegion(x->region);
#else
  if (x->region) XDestroyRegion(x->region);
#endif
#endif

#ifdef NANO_X
  GrDestroyWindow(x->xid);
#else
  XDestroyWindow(fl_display, x->xid);
#endif
  delete x;
}

Fl_Window::~Fl_Window() {
  hide();
}

// Child windows must respond to FL_SHOW and FL_HIDE by actually
// doing unmap operations.  Outer windows assumme FL_SHOW & FL_HIDE
// are messages from X:

int Fl_Window::handle(int event) {
  if (parent()) switch (event) {
  case FL_SHOW:
    if (!shown()) show();
	else
	{
#ifdef NANO_X
    GrMapWindow(fl_xid(this));
#else
    XMapWindow(fl_display, fl_xid(this));
#endif
	}
    break;
  case FL_HIDE:
#ifdef NANO_X
    if (shown()) GrUnmapWindow(fl_xid(this));
#else
    if (shown()) XUnmapWindow(fl_display, fl_xid(this));
#endif
    break;
  }

  return Fl_Group::handle(event);
}

////////////////////////////////////////////////////////////////
// ~Fl_Widget() calls this: this function must get rid of any
// global pointers to the widget.  This is also called by hide()
// and deactivate().

// call this to free a selection (or change the owner):
void Fl::selection_owner(Fl_Widget *owner) {
  if (selection_owner_ && owner != selection_owner_)
    selection_owner_->handle(FL_SELECTIONCLEAR);
  if (focus_ && owner != focus_ && focus_ != selection_owner_)
    focus_->handle(FL_SELECTIONCLEAR); // clear non-X-selection highlight
  selection_owner_ = owner;
}

#include <FL/fl_draw.H>

void Fl_Widget::redraw() {damage(FL_DAMAGE_ALL);}

void Fl_Widget::damage(uchar flags) {
  if (type() < FL_WINDOW) {
    // damage only the rectangle covered by a child widget:
    damage(flags, x(), y(), w(), h());
  } else {
    // damage entire window by deleting the region:
    Fl_X* i = Fl_X::i((Fl_Window*)this);
    if (!i) return; // window not mapped, so ignore it
    if (i->region) 
	{
#ifdef NANO_X
		GrDestroyRegion(i->region);
#else
		XDestroyRegion(i->region);
#endif
		i->region = 0;
	}
    damage_ |= flags;
    Fl::damage(FL_DAMAGE_CHILD);
  }
}

void Fl_Widget::damage(uchar flags, int X, int Y, int W, int H) {
  Fl_Widget* window = this;
  // mark all parent widgets between this and window with FL_DAMAGE_CHILD:
  while (window->type() < FL_WINDOW) {
    window->damage_ |= flags;
    window = window->parent();
    if (!window) return;
    flags = FL_DAMAGE_CHILD;
  }
  Fl_X* i = Fl_X::i((Fl_Window*)window);
  if (!i) return; // window not mapped, so ignore it

  if (X<=0 && Y<=0 && W>=window->w() && H>=window->h()) {
    // if damage covers entire window delete region:
    window->damage(flags);
    return;
  }

  // clip the damage to the window and quit if none:
  if (X < 0) {W += X; X = 0;}
  if (Y < 0) {H += Y; Y = 0;}
  if (W > window->w()-X) W = window->w()-X;
  if (H > window->h()-Y) H = window->h()-Y;
  if (W <= 0 || H <= 0) return;

  if (window->damage()) {
    // if we already have damage we must merge with existing region:
    if (i->region) {
#ifndef WIN32
#ifdef NANO_X
      GR_RECT R;
      R.x = X; R.y = Y; R.width = W; R.height = H;
      GrUnionRectWithRegion(i->region, &R);
#else
      XRectangle R;
      R.x = X; R.y = Y; R.width = W; R.height = H;
      XUnionRectWithRegion(&R, i->region, i->region);
#endif

#else
      Region R = XRectangleRegion(X, Y, W, H);
      CombineRgn(i->region, i->region, R, RGN_OR);
      XDestroyRegion(R);
#endif
    }
    window->damage_ |= flags;
  } else {
    // create a new region:
#ifdef NANO_X
    if (i->region) 
		GrDestroyRegion(i->region);
#else
    if (i->region) 
		XDestroyRegion(i->region);
#endif
    i->region = XRectangleRegion(X,Y,W,H);
    window->damage_ = flags;
  }
  Fl::damage(FL_DAMAGE_CHILD);
}

void Fl_Window::flush() {
  make_current();
//if (damage() == FL_DAMAGE_EXPOSE && can_boxcheat(box())) fl_boxcheat = this;
  fl_clip_region(i->region); i->region = 0;
  draw();
}

int fl_old_shortcut(const char* s) {
  if (!s || !*s) return 0;
  int n = 0;
  if (*s == '#') {n |= FL_ALT; s++;}
  if (*s == '+') {n |= FL_SHIFT; s++;}
  if (*s == '^') {n |= FL_CTRL; s++;}
  return n | *s;
}

//
// End of "$Id: Fl.cxx,v 1.1.1.1 2003/08/07 21:18:39 jasonk Exp $".
//